Ventilated silo-stave



H. B. JONES.

VENTILATED SILO STAVE.

APPLICATION HLED AUG-26,1920.

Patented Sept. 20, 1921.

M 55% J g Jaw I N VEN TOR.

UNITED STATES PATENT OFFICE.

HARRY B. JONES, OF CHICAGO, ILLINOIS, ASSIGNOR TO PERMANENT PRODUCTS COM- PANY, OF CHICAGO, ILLINOIS, A CORPORATION OF ILLINOIS.

, Specification of Letters Patent.

REISSUED Patented Sept. 20, 1921.

Application filed August 26, 1920. Serial No. 406,055.

To all whom it may concern:

Be it known that I, HARRY B. JoNEs, a citizen of the United States, residing at Chicago, in the county of Cook and State of Illinois, have invented a certain new and useful Improvement in Ventilated Silo- Staves, of which the following is a specification.

My invention relates to that class of staves which are employed in silos, which are erected in sections.

There is a very considerable demand for concrete construction for the storage of other material than ensilage, which contents require ventilation as for example, corn on the cob.

My invention has for its object to produce a ventilated stave which will permit a free circulation of air through the walls, but is so constructed as to exclude moisture, and has for its further object to provide a construction which will break the joints of the ventilating stave.

My means of accomplishing the foregoing objects may be more readily understood by having reference to the accompanying drawings which are hereunto annexed and are a part of this specification in which Figure 1 is a side elevation of a stave constructed in accordance with my improvement.

Fig. 2 is a vertical sectional view.

Fig. 3 is an end view.

Fig. 4 is a fragmentary section of a wall constructed with my improved stave.

Similar reference numerals refer to similar parts throughout the entire description.

As shown in the drawing, the stave l is provided at one side with a convex rib 2 and at its other side with a concavity 3, which is fitted to and coincides with the convex rib or the next adjacent or mating stave.

The convex rib extends along and over the up er end 4, and the concavity along and across the lower end 5, as clearly, seen in i the detail views. The end 4 is formed with a horizontal portion 6, an inclined portion 7 and a horizontal portion 8 at the bottom of the inclined portion 7. A similar construction is employed at the end 5, there being horizontal concave portions 9 and a horizontal concave portion 11, extending from the end of the inclined portion 10.

There being no flat surface uponwhich the water may lodge, the result of this construction is that the concave end 4 sheds water from rain or snow thus preventing the water from reaching the inside of the building.

It will be apparent from an examination of F igtd that by constructing the two horizontal portions on the ends upon diflerent planes and connecting them by an inclined portion, each joint is broken with the next adjacent stave. In the center of the stave I form a plurality of ribs 14 which have openings 12 intermediate the ribs, which provide for the circulation of air. The upper wall 13 of each rib 14 is slanted so that water cannot pass into the interior of the silo unless it comes in a horizontal direction.

It will be obvious to persons skilled in the art from the foregoing description taken in connection with the drawing, that a stave constructed in this manner provides for ample ventilation, at the same time provides for shedding of the water resulting from rain or snow.

Having described my invention what I regard as new and desire to secure by Letters Patent is:

A ventilated stave comprising a slab of molded concrete, said slab havin a plural-=- ity of ribs, there being openings tirough the stave intermediate said ribs, the upper wall of each rib being slanted downwardly and outwardly whereby the space intermediate said ribs is wide at the one surface of the slab and narrow at the other.

In witness whereof I have signed the foregoing specification.

HARRY B. JONES. 

